Paper-trimming device



V Patented Oct. 7,1930

wrmmm: GAROLD ems AND rmin riu'rz, or

MANHATTAN, l KANsA S i r PAPER-,TBIMIYIICNTG nnvion Application filed October 74927.1sen te. 224, 63.

Our invention relates to improvements in paper trimming devices,'and it consists in the vcombinations, constructions, and arrangements herein describedand claimed. a

An object of our invention is to provide a paper trimming devicewhich is especially arranged for wall paper or the like, and which has novel means for cutting the paper at certain intervals.

A further object of our invention is to pro vide a device of the type described by means of which the paper may be cut'along the selvage before the paper is formedinto rolls.

A further object of our invention is to provide a device of the type described which cuts the paper so that the selvage edge of each roll of the paper may be removed therefrom with slight effort.

A further object of our invention is to provide a device of the type described which trims the selvage edge of the paper yet retains'the selvage edge, thus protecting the roll of paper against damage.

Other objects and advantages will appear 1 in the following specification, and the novel features of the invention will be particularly pointed out in the appended claim.

Our invention is illustrated in the accompanying drawings, forming part of this application, in whlch Figure 1 is a longitudinal sectional View of our device, portions thereof being shown in elevation, V V 'Figure2 is a section along the line of Figure 1, v

Figure 3 is a section along the line 3-3 of Figure 2,

Figure 4 is a top plan view of a portion 7 of the device, and

Figure 5 illustrates a roll of paper-being trimmed.

In carrying out our invention, we provide a frame 1 having side walls 2 and 3. A cutting roller 4 is rigidly mounted upon a shaft 5 which is journalled in the sides 2 and 3.

j A drive gear 6 is'rigidly mounted upon the shaft 5. A pulley 7 is also rigidly mounted upon the shaft '5 and is arranged to receive a belt 8 which is operatively connected to any suitable power means, not shown. A toothed 'ing thepaper the cutters. d j A u v "From the foregoing description of the er 4:; j A friction roller 10 having movably disposed in elongatedslot s 13 inthe side walls2 and 3, A driven gear 1 1 is rigidly mounted upon the shaft'12 and is in mesh with the drivegear 6. An annular recess" 15 is disposedin the roller 10 in registration with thetoothed cutter 9. An adjustable means is provided forvarying the distance between" the rollers 1 and This means comprises jblocks lti rotatably mounted upon the shaft 12 and arrangednto receive the'en'ds" of adjusting screws 17 and 18'. The adjusting screwsare movably disposed inthe frame l by threads 19. Compression springs-2O and2l are disposed concentricwith the adjusting screws. 17 and 18, respectively, andare arranged to engage with the blocks 16 and retaining rin S'22. A paper 24 having a male guide 25 and a female guide 26 movably' disposed thereon; The guides 25 and 26 are provided with cutaway portions 27 and28, thus forming a recess 29 between the guides and the base portion24. The guides 25 and 26 are provide'd with elongated slots 30 and 31, respectively, for receiving bolts 32 and 33, respectively. i i

e Spaced-apart guide trips 34 and 35 entend between the side walls 2 and 3 for guid- V as it, passes from between the rollers 4E and 10. l l

A In Figure 5, wepaper 36 after it have showira roll of has passed from between various parts of the device lthe operation thereof maybe readily understood. Letu's assume tliat}power is" applied to the pulley rotatedi'non'e directiongand the roller 10 will berotated in theopposite direction through the gears 6 and 1A. The guide plates 25 and 26 may be adjusted so that by passing a strip of paper, indicated at 37, through the recess 29, the paper: will be iE I'Q FiCE,

butter 9 disposed concentric therolL grooves is rigidlymountedupona shaft 12 which is feedingunit 23 consists of a base 7 through thebeltS. The roller will be cut at the desired location. There are always selvage edges upon Wall paper and one of these edges must be cut from the paper before the paper is hung upon the Wall. One of the purposes of retaining the selvage edges until time for the paper to be used is to protect the paper against damage.

Let us assume that the guide plates 25 and 26 are set at the desired positions. The operator maythen startthe paper through the recess 29 until it is gripped between the rollers 4 and 10. The rollers will then'oontinue I the movement of the paper and during this movement, the prongs of the cutter 9will pass through the paper at spaced-apart points. As the paper passes from between the rollers, it passes between the guide strips 34 and 35 and may then be formed into a n0 roll, as shown at 36.

The points of serration cut the roll approximately half in two at the selvage end thereof. The paper is rolled relatively tight and the roll, such as that shown at 86, is

relatively solid. The person who Wishes to hang the paper may separate the selvage edge from the remainder of the roll by striking the roll, as shown in Figure 5, upon any solid support, as indicated at 38. By 30 striking the roll upon one side and then striking it upon the other, as shown in Figure5, the selvage end will be torn loose from the remainder of the roll.

This device not only provides a means whereby the selvage end may be readily removed, but when the selvage end is removed, a relatively rough edge is formed upon the paper and through practical experience, it has been found that this rough edge blends 40 into the adjoining strip of paper making it very difiicult to see the line where the two strips of paper join.

We claim:

, A paper trimming device comprising a frame, a cylindrical member disposed on a shaft mounted in the frame, teeth circumferentially disposed on the cylindrical member adjacent one end thereof, a roller having a circumferential groove for receiving said teeth and being disposed on a shaft adjacent the cylindrical member, bearing blocks for supporting the roller shaft, gears disposed on the cylindrical member shaft and the roller shaft for conversely rotating the cylindrical member and the roller, and adjusting screws disposed in the frame and associated with the roller shaft bearing blocks for varying the position of the roller With respect to the cylindrical member.

WILBERT GAROLD FRITZ.

FRED FRITZ. 

